GLENDALE, Ariz. – Adam Wieczorek was as surprised as the rest of the world when he not only caught Arjan Bhullar in an omoplata at UFC on FOX 29, but actually finished the job.

Wieczorek (10-1 MMA, 2-0 UFC) scored the biggest victory of his career and a surprising upset when he put the first blemish on Bhullar’s (7-1 MMA, 1-1 UFC) record in their heavyweight matchup. Winning was a big upset in itself, but doing it with just the second omoplata finish in UFC history made it even more special.

For Wieczorek, going to the ground with the highly credentialed wrestler was not part of the game plan. He wanted to exchange more strikes, but when he got put down, Wieczorek said instincts took over. He applied the omoplata, despite admitting the technique was not part of his preparation.

“Honestly I haven’t practiced that at all,” Wieczorek told reporters, including MMAjunkie, through a translator. “That was just kind of instantaneous because of my background with Brazilian jiu-jitsu. Absolutely (I was surprised).”

UFC on FOX 29 took place at Gila River Arena in Glendale, Ariz. The heavyweight bout between Wieczorek and Bhullar streamed on the UFC Fight Pass prelims prior to the remainder of the card on FOX.

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Adam Wieczorek def. Arjan Bhullar at UFC on FOX 29: Best photos

After scoring a unanimous decision win over Anthony Hamilton in his octagon debut at UFC Fight Night 121 in November, Wieczorek was paired with Bhullar. Most looked at him as nothing more as an opponent to help build Bhullar, but the Polish fighter had other plans.

Wieczorek, 26, described his emotions after the fight as “so happy,” and hopes the upset will set up bigger opportunities going forward. He wouldn’t call out any of his fellow heavyweights, but he promises to produce again whenever the UFC matchmakers call his number.

“I don’t have any names in mind, but definitely I want to show up with the best performance I can,” Wieczorek said. “I’m going to be solid training and I’m still young, so hopefully I’m going to show my performance next fight.”